Well luckily you can order any food you decide on through the net. Maybe a pain but it's all available.
I agree the test is a precaution test but can turn up things too. Worth it IMO. Yes your baby is still a puppy in many ways but as far as food goes...should be on an adult of all stages food. Larger breeds stay on puppy foor for like 18 mnths to 2 years small switch earlier. Do you have any other furbabies?